Respuesta:
12
Explicación paso a paso:
15 @ a = x @ y
x = 15
y = a = 12
x - y + 1 = 15 @ a
x - y + 1 = 4
15 - y +1 = 4
16 - y = 4
y = 12
a = 12
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Verified answer
Respuesta:
12
Explicación paso a paso:
15 @ a = x @ y
x = 15
y = a = 12
x - y + 1 = 15 @ a
x - y + 1 = 4
15 - y +1 = 4
16 - y = 4
y = 12
a = 12